Mold expanding usually occurred in double-wall precast concrete(DWPC)shear wall during construction due to improper vibrating,which could be conquered by using self-compacting concrete(SCC)on the wall.SCC has high liquidity which generated continuous lateral pressure on the framework.In this paper, the lateral pressure on the framework, and the influences of casting rate and section length to the formwork pressure were discussed.Real-time monitoring was executed and the testing results were analyzed.Results showed that the faster the casting rate was,the higher pressure the initial formwork had,and the longer time the pressure droped.The initial pressure and the dropping rate had no relation with the formwork section length.